Nut-lock



UNITED STATES PATENT 'Erice HENRY FROBIRD, OF OSNABURG, OHIO.

NUT-LOCK.

SPECIFICATION' forming part of Letters Patent No. 479,065, dated July 19, 1892. Application filed May 16, 1892. Serial No. 433,180. (Ilo model.)

.To a/ZZ whom it may concern.-

Be it known that I, HENRY FROBIRD, a citizen of the United States, residing at Osnaburg, in the county of Stark and State of Ohio, have invented a new and useful Nut- Lock, of which the followin gis a specification.

My invention relates to improvements in nut-locks, the objects in View being to provide a cheap and simple device adapted to be applied to the nuts and bolts now in use and to require but a silght change of the bolts for the application of the lock and to so construct the lock as to positively prevent any retrogression of the inut upon the bolt when the same is vibrated by shaking the machinery or by the passage of trains over rail-joints.

Other objects and advantages of the invention will appear in the following description, and the novel features thereof will be particularly pointed out in the claim.

Referring to the drawings, Figure l is a perspective of a portion of a rail-joint the nuts of the bolts of which are locked in accordance with myinvention. Fig. 2 is atransverse section thereof. Fig. 3 is a detail of the fastener or lock, the members separated.

Like numerals of reference indicate like parts in all igures of the drawings.

l designates the rail-sections, and 2 the fish bars or plates,which, together with the web of the rail, are perforated transverselyto receive the bolt 3. The bolt 3 is of ordinary construction, with the exception that its outer or threaded end is cut away or squared to form a tenon 5. Upon this bolt is threaded an ordinary nut.

The fastener consists of an inner and an outer U-shaped plate, (designated 6 and 7, re- Y walls reduced so as to iit between the side walls of the inner plate, and its opposite edges or central portion is provided with a square opening l0 to fit the tenon at the ends of the bolt, and at opposite sides of the square opening is provided with narrow transverse slots l1, which receive the extremities of the end walls of the inner U-shaped plate.

In operation, or, rather, in applying the nutlock, the inner plate and nut are simultaneously run down upon the threads of the bolt through the medium of a wrench, after which the outer U-shaped plate is applied to the eX- tremity of the bolt, and when in such position its side Walls embrace the sides of the nut and fit between the side walls of the inner U-shaped plate. In this position, also, the side walls of the inner U-shaped plate will pass through the narrow slots formed in the central portion at the edges of the outer U-shaped plate. When thus assembled, the perforations formed in the side walls of the inner U-shaped plate are beyond the front face of the outer U-shaped plate, and in order to prevent accidental separation of the two plates, Vand hence liberation of the nut, split pins 12 are passed through the perforations in the inner plate beyond the face of the outer plate. After inserting the pins their split ends are reversely bent or clinched, as at 13, so that they cannot be accidentally withdrawn.

From the foregoing description, in connection with the accompanying drawings, it will 'be seen that I have provided a simple and efcient nut-lock that may be applied to bolts and nuts now in use with no change whatever of the nuts and with but very little change to the bolts, and, furthermore, the said nut-lock may be removed at will for the -purpose of changing the machinery, renewing parts, dac., and subsequently reapplied without destroying its efficiency.

Having described my invention, what I claim is- The combination, with the bolt and nut, the

former having a frontsquare end, of an inner U -shaped plate perforated to receive the bolt and having itsl side walls embracing the side walls of the nut and beyond the same pro- IOO vided with pairs of opposite perforations, and of the outer plate and having their extreiniro the outer U-shaped plate havingits side Walls ties clinched, substantially as specified. taken between those of the inner plate and In testimony that I claim the foregoing as having a central portion provided with a my own I have hereto affixed my signature in 5 square opening to receive the square end of the presence of two witnesses.

the bolt and its opposite edges slotted to re- HENRY FROBIRD. eeive the side Walls of the inner plate, and V'Vitnesses: the splitpins passed through the perforations W. O. WERNTZ,

formed in the inner plate beyond the plane ADAM FROBIRD. 

